Filter.



Patented Mar. I3, |900.- J. F. ZlEGLER.

FILTER.

(Appliemo'n med June 24, 189s.)

2 Sheets-Sheet 2.

(No Model.)

NITED STATES .TOIIN F. ZIEGLER,

or TOLEDO, OHIO.

SPECIFICATION forming part ef Lettere Patent No. 645,500, dated Maren13, 1900.

Appueetien ined Iene 24, 1899.

To a/ZZ whom t may concern:

Beit known that I, JOHN F. ZIEGLER, of Toledo, county of Lucas, andState ofv Ohio, have invented certain new and useful Improvements inFilters; and I do hereby declare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it apperta'ins to make and use the same, referencebeing had to the accompanying drawings, and to the iigures of referencemarked thereon,which form part of this specification.

My invention has reference to a filter to be employed in ofce-buildings,public parks, exposition grounds, and other places where the consumptionof water is very great, necessarily requiring a filter of greatcapacity.

With the object in view of supplying a iilter of this kind my inventionis constructed.

My invention is characterized by ycertain novel details of constructionwhereby the same can be easily assembled and as easily taken apart forthe purpose of repairing when necessary.

In the drawings, Figure lis a perspective view of my filter. The outershell, however, is shown partly cut away and discloses on the interiorthe angle-iron frame riveted to the shell and on which the basket shownin Fig. 2 is hung. Fig. 2 is a perspective of the basket Iv employ andinto which are adapted to be inserted filter-blocks, one of which I haveshown in perspective'in Fig.` 5. Fig. 3 is a vertical cross-section ofmy lter, showing the manner of assembling the same. lThe filter-brick inthis view is shown half in section and half in full lines. Fig. 4 is anelevation of the tube and packing thereon which I employ to conduct thewater from the interior of the filter-brick to the pure-water chamber.Fig. 5 is a perspective view of one of my filter-blocks. Fig. 6 is anelevation of the hooked bracket I employ to hold the blocks in position.

The shell l of the filter is constructed of sheet metal, preferably ironor steel, and is made long and narrow. In Fig. 1 vI have shown my filteras it appears; but because of the space on sheetbeing limited I haveshown the same much shorter than is my practice to construct the same.For use at expositions the shell 1 -is made from ten to fifteen feet inlength, and the basket (shown in Fig. 2) I also Serial No. 721,683. (Nomodel.)

make much longer to receive from forty to sixty filter-blocks instead ofthree, as shown in the drawings. Shell 1 is formed with a hinged cover2, which is opened when ice and water are to be put into the filter.

3 is an angle-iron frame made to closely fit the interior of shell 1 andis secured thereto by rivets 4. Extending from frame 3 are screwthreadedstuds 5, adapted to receive nuts 6. 7 isa basket, made of metal, havingthe box-like portion 8 slightly tapered, being of less diameter at thebottom than at top, and the iiange 9 integral with portion 8 and formedwith holes 10, through which studs 5 pass-when the basket is placed inposition in the filter. `Before placing the basket in position, however,I place a packing 11, of asbestos or other suitable material, entirelyaround the frame 3, after which the basket is placed in position and thenuts 6 screwed upon the .studs 5, thereby'compressing the `packing 11between the iiange 9 and the frame 3 and preventing the passage ofwater'. The box-like portion 8 of the basket is pressed in the form ofparallel channels or grooves on vthe interior thereof, showing as ridges12 on the exterior, which are adapted to receive filter-blocks 13. Thebody of iilterblock 13 is a rectangular brick 14, of porous filteringmaterial, and is formed with a plurality of approximately-sphericalcells 15, having connecting-passages 16, which lead the water from thecells to the lower tier of cells, from which it is carried by a passage17 to the point of outlet 18. At this point the brick is formed with acircular opening, into which I insert a tube 19, of any suitablematerial, but preferably of porcelain, having a surrounding packing ofrubber 20. Around'the rubber packing I place a band of metal 21, Afterthe brick 13 is formed I secure' the same within a cast-iron frame 22,having the tapered side portions 23, formed with ridges or runners 24thereon. This ridge has a twofold purpose in that it is used to guidethe block in position in the basket and also to prevent the brick in theblock from collapsing when clamped in position. Frame v22 is.

further formed with a bottom piece 25 and the portions 26 disposed atright angles to side'pieces 23. The bottom piece 25 is formed with anopening coincident with a circular IOO o as a siphon.

.Ituwill be observed opening in the bottom of the brick, through whichthe tube 19 is inserted. The portions 26 are formed on the upper sidesthereof with a rounded depression, into which seat the rounded ends ofthe screws 27, screwed into brackets 2S, having hooked extensions 29.The box-like portion of basket S is formed with a plurality of circularopenings 30, into which the hooked extensions 29 are inserted and thenhooked to the edges of the opening. To prevent water from passingthrough the openings 30, I place over the same metal covers 31, securelyriveted to the box-like portion 8. Portion 8 is also formed with anopening which serves as a passage for tube 19.

32 is a rubber cushion similar in all respects to packing 20, but havingno central opening for the reception of a tube, simply acting as acushion for the block.

In assembling my filter the basket is hung in position, as has beenshown in the foregoing description. The blocks,as shown in Fig. 5, arethen slid in position into the channels formed in the basket 7. Thebrackets 2S are hooked onto the edges of th'e circular openings 30. Thescrews 27 are made to press down upon the blocks and to compress therubber cushion 32 and the rubber packing 2O surrounding tube 19. In thismanner any leakage around the tube 19 is prevented.

To prevent the rubber cushion 32 and the packing 2O from undulyspreading, I surround the same with a metal band 21. 4

33 represents ordinary faucets on both the front and the rear of thefilter to draw ofl the Water after being filtered.

In the operation of my filter water is introduced into the top of thesame by raising the cover 2 of the shell, thereby occupying the chamberimmediately above the filter-blocks. The water then passes through thefilterblocks by percolation and is withdrawn from the chamber below thefilter-blocks through faucets 33.

In cleaning my filter a quantity of water is allowed to remain thereinand to surround the filter-blocks. An ordinary brush is then employed toremove any deposit upon the blocks,

after which the water containing the impurities is withdrawn by means ofa hose acting that by disposing the angle-iron frame, as shown,intermediate of the height of the filter-shell bulging of the shell diie@internal pressure will be prevented. I aimee the lter-block a maximumdistance from thle surface of the water, whereby the greatest pressureis brought to bear thereon, insuring thefgreatest passage of water. Byforming my bldcks of a multitude of spherical cells on theinterior theyexert the greatest possible resistance to external pressure. Also byplacing my blocks on cushions in the basket a passage is left beneaththe blocks for water whenthe filter is being cleaned.

Although I have shown my filter as the gravity-filter, I may also usethe same as a pressure-filter with slight modifications, in which casethe cover 2 forms a closure for the top of the shell, and the necessaryconducting-pipes would have to be attached.

I wish to lay particular stress upon the practical construction of myfilter-block. By the construction which I have shown all possibility ofcollapsing through pressure from clamping devices to hold the same inposition is overcome.

1. In a iilter, a iilter-shell, having a basket suspended thereinintermediate of its height, grooves formed in the basket into which areadapted to be inserted filter-blocks, in parallel relation, and meansfor clamping the blocks in the basket, substantially as described.

2. In a filter,a rectangular angle-iron frame secured to thefilter-shell, a basket hung thereon, grooves formed in the basket,ilterblocks having ridges on the sides thereof adapted to enter thegrooves, elastic cushions upon which the blocks seat, and clampingdevices to cause the filter-blocks to press upon the elastic cushions,substantially as described.

3. For employment in a filter, a filter-block, consisting of a flatrectangular brick, having on the interior thereof a plurality ofapproximately spherical cells, connected by passages; a frame in whichthe brick is secured having side pieces, on which are formedlongitudinal ridges, a tube forming a passage for water from theinterior of the brick, an elastic cushion, surrounding the tube andserving as a packing therefor and also as a cushion for the block,substantially as described.

4. A clamp for securing a filter-block in a filter, having a hookedextension designed to enter openings in the sides of the filter-basketand engage the edge of the opening, a screw threaded into the body ofthe clamp having a rounded end to enter the rounded recess in the frameof the filter-block substantially as shown and described.

5. The tube for conducting the Water from the interior of thefilter-block consisting of the portion 19 having the rubber packingthereon surrounded by the metal band 21, substantially as shown anddescribed.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

JOHN F. ZIEGLER. Witnesses:

CARL H. KELLER, OHAs. DEFENBAUGH.

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